Method and machine for producing a material web in a paper machine
AssigneeVoith Patent GmbH
InventorsTobias Henle, Alexander Gloning
Life of this patent
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Abstract
A method for producing a web of fibrous material includes the steps of: (a) low-water processing of cellulose-containing fibers into individual fibers and/or fiber bundles; (b) forming of the individual fibers and/or the fiber bundles in an air stream into a planar laid fibrous structure using a dry forming method; (c) moistening the individual fibers and/or the fiber bundles by way of a fluid; (d) solidifying the planar laid fibrous structure by applying pressure in a press nip; and (e) heating the individual fibers and/or the fiber bundles upstream from the step of solidifying (d) so as to increase a temperature of the individual fibers and/or the fiber bundles in the step of solidifying (d).
Claims15
A method for producing a web of fibrous material, the method comprising the steps of:
- (a) low-water processing of a plurality of cellulose-containing fibers into at least one of a plurality of individual fibers and a plurality of fiber bundles;
- (b) forming of at least one of the plurality of individual fibers and the plurality of fiber bundles in an air stream into a planar laid fibrous structure using a dry forming method;
- (c) moistening at least one of the plurality of individual fibers and the plurality of fiber bundles by way of a fluid;
- (d) solidifying the planar laid fibrous structure by applying pressure in a press nip;
- and
- (e) heating at least one of the plurality of individual fibers and the plurality of fiber bundles upstream from the step of solidifying (d) so as to increase a temperature of at least one of the plurality of individual fibers and the plurality of fiber bundles in the step of solidifying (d).
A machine for producing a web of fibrous material, the machine comprising:
- a device configured for low-water processing of a plurality of cellulose-containing fibers into at least one of a plurality of individual fibers and a plurality of fiber bundles;
- a dry forming unit configured for forming at least one of the plurality of individual fibers and the plurality of fiber bundles in an air stream into a planar laid fibrous structure;
- a moistening unit configured for moistening of at least one of the plurality of individual fibers and the plurality of fiber bundles by way of a fluid;
- a press nip configured for solidifying the planar laid fibrous structure by applying pressure;
- and
- a heating device which is upstream from the press nip and is configured for increasing a temperature of at least one of the plurality of individual fibers and the plurality of fiber bundles in the press nip.
Dependencies are inferred from the claim text.